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niterydr · 03-01-2006

A 4" downpipe is cool, but if you have ever been under your car and looked at your oil filter, you would realize that there is no way in hell to get a 4" pipe through there without seriously sacrificing ground clearance.
Also, exhaust gases expand, so should your piping diameter.

03-01-2006	#2
niterydr back in the saddle again 24 Hours Rally Champion! 3D Pacman white house edition Champion! 3D Racing - Track 2 Champion! ATV Winter Challenge Champion! Bloody Pingu Champion! WRX Racing 2 Champion! Tournaments Won: 5 Join Date: Oct 2003 Location: Elkhart Texas Drives: 2015 Ram Quad Cab Hemi, 1999 FRC Corvette, 93 Stealth Turbo Posts: 6,411	Re: Proof of larger DP/ Fluid Dynamics A 4" downpipe is cool, but if you have ever been under your car and looked at your oil filter, you would realize that there is no way in hell to get a 4" pipe through there without seriously sacrificing ground clearance. Also, exhaust gases expand, so should your piping diameter. __________________ My street car runs low 11's and my race car's personal best is a mid 11....